Sash lock and lifter



T. A. IRELAND. Sash Lock and Lifter.

No. 226,173 7 Patented April 6, I880.

nnllililht il'NrrEn STATES PATENT SASH LOCK AND LIFTER.

SPECIFICATION forming part of Letters Patent No. 226,173, dated April 6,1880. Application filed J annary 7, 1880.

To all whom it may concern:

Be it known that I, THOMAS A. IRELAND, of Cincinnati, Hamilton county,Ohio, have invented a new and useful Window-Sash Lock and Lifter, ofwhich the following is a specification.

My invention is an improvement on the customary lug or projection fromthe bottom rail of a window-sash to enable such sash to be lifted; andmy improvement consists in the addition to such lifter of a yieldinghook, which, on the closure of the sash, engages under a plate or flangeupon the window-sill, and which, when the sash is to be lifted, ispressed back by the operators finger, so as to necessarily unlock thesash in the very effort to lift the same.

An embodiment of my invention is illustrated in the accompanyingdrawings, in which Figure lisaperspective view of my lock and lifter,the sash being partially elevated. Fig. 2 is a vertical section of thesame, the sash being shown closed and the hook being shown retracted bythe pressure of the operators finger in the act of lifting the sash.

A may represent a part of a lower windowsash; B, a part of thewindow-sill.

0 represents the plate or housing, and O the lug of my lifter, said lugconstituting a rigid projection from the sash, and having the customaryconcave under surface for reception of the operators finger.

The lifter-body has ori fices cfor wood-screws, by which it is fastenedto the sash in the manner shown. Said body has also a slot or recess, c,which is occupied by a hook or catch, D, which is pivoted by its upperend at E to the lifter. Said catch has on its front surface a swell orprotuberance, (1, against which the operators finger presses in theeffort to lift the sash, as indicated in Fig. 2.

A spring, F, secured on the rear of the catchy D, holds it normallyforward, but permits it to be temporarily retracted or pressed backeither by the action of the sill-plate in closing the sash or by thepressure of the operators finger in opening the sash, as already stated.

The sill-plate may consist of a simple L- formed piece of metal, G,having a rectangular'orifice, g, to admit the hooked extremity of thecatch, and suitable holes gfor the woodscrews, by which it is attachedto the windowsill.

Any form of spring may be employed; but I have found convenient andprefer the form here shown, having a central coiled portion surroundingthe pivot and occupying aforked recess in the upper end of the catch,and extending upward and downward for pressure against the rear surfacesof the lifter and catch, respectively, in the manner indicated in Fig.2.

The sill-plate may consist of a simple flat rectangular strip of metal,if preferred.

Over those devices in which the duties of catch and litter aredischarged by a single member my device possesses several obviousadvantagesfor example, the act of lifting the sash, often requiringconsiderable force, puts no strain on the catch. I11 the act of lifting,the operator necessarily releases the catch without mental exercise onhis part. The lifter constitutes a protecting housing for the catch. Thedevice, besides being more neat and sightly, is characterized by greatercompactness, strength, and durability.

I claim- As a new article of manufacture, the combined sash lifter andfastening consisting of plate or housing 0, recessed at c, and havinglifting-lug O, the locking hook or catch pivoted to the lifter G andprotruding from the face thereof, the spring F, and the sillplate Gr,all substantially as and for the purposes set forth.

In testimony of which invention I hereunto set my hand.

THOMAS A. IRELAND.

W'itnesses:

Gno. H. KNIGHT, W. TYSQN J UDKINS.

